United Airlines flight UA 2721: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Thu 06:30 Salt Lake City (SLC) 10:39 George Bush, Houston (IAH) C
UA 2721 Non-stop Airbus A319 (319) 3:09 Operates only on 2025-06-26
Daily 06:30 Salt Lake City (SLC) 10:39 George Bush, Houston (IAH) C
UA 2721 Non-stop Boeing 737-800 (738) 3:09 Effective 2025-06-27 through 2025-07-04
Sat 06:30 Salt Lake City (SLC) 10:39 George Bush, Houston (IAH) C
UA 2721 Non-stop Boeing 737-900 (739) 3:09 Operates only on 2025-07-05
Daily 06:30 Salt Lake City (SLC) 10:39 George Bush, Houston (IAH) C
UA 2721 Non-stop Boeing 737-800 (738) 3:09 Effective 2025-07-06 through 2025-07-31
Mon-Fri,Sun 09:40 George Bush, Houston (IAH) C 11:15 Denver (DEN)
UA 2721 Non-stop Boeing 737-900 (739) 2:35 Effective 2025-06-01 through 2025-06-25
Sat 09:40 George Bush, Houston (IAH) C 11:15 Denver (DEN)
UA 2721 Non-stop Boeing 737 MAX 9 (7M9) 2:35 Effective 2025-06-07 through 2025-06-21
Daily 12:00 George Bush, Houston (IAH) C 17:01 Boston Logan (BOS) B
UA 2721 Non-stop Boeing 737-800 (738) 4:01 Effective 2025-06-26 through 2025-07-31
Mon,Wed-Fri,Sun 15:25 Hayden (HDN) 16:35 Denver (DEN)
UA 2721 Non-stop Airbus A319 (319) 1:10 Effective 2025-08-01 through 2025-08-18
Sat 15:25 Hayden (HDN) 16:35 Denver (DEN)
UA 2721 Non-stop Boeing 737-800 (738) 1:10 Effective 2025-08-02 through 2025-08-16
Tue 15:30 Hayden (HDN) 16:40 Denver (DEN)
UA 2721 Non-stop Airbus A319 (319) 1:10 Effective 2025-08-05 through 2025-08-12
Non-Direct Flights:
Thu 06:30 Salt Lake City (SLC) 17:01 Boston Logan (BOS) B
UA 2721 1-stop Airbus A319 (319) 8:31 Operates only on 2025-06-26
Daily 06:30 Salt Lake City (SLC) 17:01 Boston Logan (BOS) B
UA 2721 1-stop Boeing 737-800 (738) 8:31 Effective 2025-06-27 through 2025-07-04
Sat 06:30 Salt Lake City (SLC) 17:01 Boston Logan (BOS) B
UA 2721 1-stop Boeing 737-900 (739) 8:31 Operates only on 2025-07-05
Daily 06:30 Salt Lake City (SLC) 17:01 Boston Logan (BOS) B
UA 2721 1-stop Boeing 737-800 (738) 8:31 Effective 2025-07-06 through 2025-07-31
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This flight number is listed as serving the following routes:


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United Airlines flight UA 2721: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA2721
06:30
Salt Lake City (SLC)

10:39
George Bush, Houston (IAH) C
Operates only on 2025-06-26
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:09, non-stop
Airbus A319 (319)
United Airlines UA2721
06:30
Salt Lake City (SLC)

10:39
George Bush, Houston (IAH) C
Effective 2025-06-27 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:09, non-stop
Boeing 737-800 (738)
United Airlines UA2721
06:30
Salt Lake City (SLC)

10:39
George Bush, Houston (IAH) C
Operates only on 2025-07-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:09, non-stop
Boeing 737-900 (739)
United Airlines UA2721
06:30
Salt Lake City (SLC)

10:39
George Bush, Houston (IAH) C
Effective 2025-07-06 through 2025-07-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:09, non-stop
Boeing 737-800 (738)
United Airlines UA2721
09:40
George Bush, Houston (IAH) C

11:15
Denver (DEN)
Effective 2025-06-01 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-900 (739)
United Airlines UA2721
09:40
George Bush, Houston (IAH) C

11:15
Denver (DEN)
Effective 2025-06-07 through 2025-06-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:35, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA2721
12:00
George Bush, Houston (IAH) C

17:01
Boston Logan (BOS) B
Effective 2025-06-26 through 2025-07-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:01, non-stop
Boeing 737-800 (738)
United Airlines UA2721
15:25
Hayden (HDN)

16:35
Denver (DEN)
Effective 2025-08-01 through 2025-08-18
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:10, non-stop
Airbus A319 (319)
United Airlines UA2721
15:25
Hayden (HDN)

16:35
Denver (DEN)
Effective 2025-08-02 through 2025-08-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737-800 (738)
United Airlines UA2721
15:30
Hayden (HDN)

16:40
Denver (DEN)
Effective 2025-08-05 through 2025-08-12
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:10, non-stop
Airbus A319 (319)
Non-Direct Flights:
United Airlines UA2721
06:30
Salt Lake City (SLC)

17:01
Boston Logan (BOS) B
Operates only on 2025-06-26
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 8:31, 1-stop
Airbus A319 (319)
United Airlines UA2721
06:30
Salt Lake City (SLC)

17:01
Boston Logan (BOS) B
Effective 2025-06-27 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:31, 1-stop
Boeing 737-800 (738)
United Airlines UA2721
06:30
Salt Lake City (SLC)

17:01
Boston Logan (BOS) B
Operates only on 2025-07-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 8:31, 1-stop
Boeing 737-900 (739)
United Airlines UA2721
06:30
Salt Lake City (SLC)

17:01
Boston Logan (BOS) B
Effective 2025-07-06 through 2025-07-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:31, 1-stop
Boeing 737-800 (738)
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This flight number is listed as serving the following routes:
  • George Bush, Houston (IAH) - Boston Logan (BOS)
  • George Bush, Houston (IAH) - Denver (DEN)
  • Hayden (HDN) - Denver (DEN)
  • Salt Lake City (SLC) - Boston Logan (BOS)
  • Salt Lake City (SLC) - George Bush, Houston (IAH)
All United Airlines flights
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